D365 F&O | Workflow editor - Your security settings do not allow this application to be run on your computer

When opening the workflow editor from Dynamics 365 for Finance and Operations you may see an error message saying: "Your security settings do not allow this application to be run on your computer."



This is a security configuration from Windows. Check the registry settings regarding the prompting level for trusted sites and local intranet (Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\Security\TrustManager\PromptingLevel). They should be enabled. If not just change them.


Than you just need to add the D365 F&O url as a trusted site in internet explorer setting. Try again and it should look like this: